<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./lib/react.js"></script>
    <script src="./lib/react-dom.js"></script>
    <script src="./lib/browser.js"></script>
</head>
<body>
    <div id="root"></div>

    <script type="text/babel">

        
        //jsx   javascript  +  xml
        // ReactDOM.render(<h1>hellow world</h1>,document.getElementById("root"))
        
        var H1 = <h1>hellow world</h1>;
        //jsx   javascript  +  xml
        ReactDOM.render(H1,document.getElementById("root"))
    
    
    </script>
</body>
</html>